take a hot air gun to it on the lower setting for maybe 30 sec to a min and the twist off most of the time there stuck on with hot glue use a pair if pliers as the metal frame will be hot ... and just replace with a new tip guide and re glue and then just epoxy coat be back to new
no need to go sawing the tip off ...
or take it to a local tackle shop they should have some one who does rod repair